Since the Jelly Bean source was released, there’s been no shortage of custom ROMs available for many of the popular Android handsets out there. Despite how solid many of these releases are, there are still plenty of us interested in finding out when officially-supported Jelly Bean updates may become available from manufacturers. For those of you with Samsung phones, a preliminary schedule has leaked, giving us some idea of what to expect through the end of the year.

SamMobile attributes this information to Samsung insiders from which it’s received news on Ice Cream Sandwich updates in the past. According to them, the GS3’s update will be first, having already made it through early testing. For an ETA, they’re looking to sometime around the end of September or early October. That’s a bit later than earlier rumors predicted.

The Galaxy Note 2 may be next in line, but the sources were unclear if the phone might actually launch with Jelly Bean already on board, or if it would get the release via an early Q4 update.

The fates of the Galaxy S II and the Note sound a little less certain, but things are apparently looking good for Jelly Bean’s prospects on both. The sources suggest that, if something goes poorly during further testing, the GS2 might get a “value pack” reduced-functionality update, but neither expect that to happen nor speculate just what such a release might contain. If all goes well, the GS2 and original Note would see updates before the end of the year.

Samsung hasn’t confirmed these projections, but perhaps it will have something to say on the topic at some of its events later this month.